The sizes of the Sun and planets determine the strength of gravitational pull of the planets on each other and the Sun. The Sun's mass is so great that the planets can't escape from the Sun's pull and so as the planets are moving by the Sun pulls them back into orbit.
The sun is a thousand times more massive than all the planets combined. The planets all orbit the sun for this reason--due strictly because of its great mass.
the sun
They tend to be round, spherical objects which are visible in space. They have great mass and their own gravity.
The farther a planet is from the sun the slower its orbit speed.
No. Planets have gravity as a result of their own mass.
Planets have less mass than the sun, hence, they have weaker gravitational fields.
The closeness to the Sun is not directly related to the mass.
The sun is a star, not a planet. The sun has about 700 times the mass of all the planets combined.
The gravity that keeps the planets in orbit is the sun's gravity, which is a product of the sun's mass.
no the sun isn't a land mass it is a ball of gas which all the planets orbit around
No. The surface gravity of a planet depends on its size and mass, not its distance from the sun.